(19)
(11) EP 0 486 252 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.03.1993 Bulletin 1993/11

(43) Date of publication A2:
20.05.1992 Bulletin 1992/21

(21) Application number: 91310410.5

(22) Date of filing: 12.11.1991
(51) International Patent Classification (IPC)5: B65H 3/06, G07D 13/00
(84) Designated Contracting States:
DE FR GB

(30) Priority: 16.11.1990 GB 9024998

(71) Applicant: AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL INC.
Dayton, Ohio 45479 (US)

(72) Inventor:
  • Nicoll, Kenneth Andrew
    Dundee DD1 4NG, Scotland (GB)

(74) Representative: Robinson, Robert George 
International Patent Department NCR Limited 915 High Road North Finchley
London N12 8QJ
London N12 8QJ (GB)


(56) References cited: : 
   
       


    (54) Torque limiting mechanism for use in a drive system


    (57) The invention relates to a torque limiting mechanism comprising rotatable drive and driven members (144,146) having a common axis of rotation. The drive member (144) includes a resilient tripping finger (152) having an end portion (154) which is adapted to engage resiliently in a recess (166) formed in the inner surface of a cylindrical portion (162) of the driven member (146) for the purpose of applying a driving torque to the driven member (146). In the event of this torque exceeding a certain limit, the tripping finger (152) is caused to become disengaged from the recess (166), thereby disconnecting the drive to the driven member (146) and permitting the drive member (144) to rotate relative to the driven member (146). The torque limiting mechanism may be included in a drive system included in a currency note pick mechanism, the torque limiting mechanism serving to disconnect drive to the pick mechanism in the event of a gulp feed occurring.






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